GARDINER DAM SPILLWAY BRIDGE STRUCTURAL EVALUATION
Location: Cutbank, SK
Project Type: Structures
About This Project
In 2018, ISL was retained by the Water Security Agency (WSA) to carry out a structural condition assessment and load capacity evaluation of the Spillway Bridge that spans the Gardiner Dam to identify remaining service life and discuss options for rehabilitating the bridge to ensure this notable piece of infrastructure remains in service over the next 50 years.
The expected service life of each bridge component was estimated using a probabilistic analysis of chloride induced corrosion and damage development over time. A load evaluation was conducted using the current Canadian Highway Bridge Design Code and the Saskatchewan Ministry of Highways and Infrastructure Bridge Design Criteria for rating vehicles.
WSA was hopeful to receive multiple options for rehabilitation as previous years of testing had been producing the same results. Using thorough analysis, ISL was able to produce four different rehabilitation options, all taking into account traffic disruptions, maximization of service life and cost. With the options provided, WSA can take the steps required to ensure the continued enjoyment of this iconic piece of infrastructure and the subsequent Diefenbaker Lake by visitors for years to come.
- Structural Engineering
- Supporting Services